Our earth is 8,000 miles wide. The distance from the sun to the earth alone is 93 million miles. The distance from the sun to pluto (the distance of the solar system!) is three billion and six hundred sixty-six million miles. Our sun is one of thousands upon thousands of stars in one arm of a swirling galaxy. Our galaxy is one in billions upon billions of galaxies in the observable universe. We can only observe 28 billion light-years away, and so what is beyond that border, we've no idea. Our observable universe could be an infinitely small fraction of the real universe. It's just mind-boggling how big it all is.